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-   -   Fast blow vs. slow blow fuse (https://www.diybanter.com/electronics-repair/191354-fast-blow-vs-slow-blow-fuse.html)

[email protected] February 5th 07 02:14 AM

Fast blow vs. slow blow fuse
 
Looking at fuse how do you tell difference? Thanks.


Arfa Daily February 5th 07 02:34 AM

Fast blow vs. slow blow fuse
 

wrote in message
oups.com...
Looking at fuse how do you tell difference? Thanks.


A fast blow usually has an " F " designator before the value, whereas a slow
blow or antisurge type usually carries a " T " designator, for " T " ime
delay - F2.5A or T3.15A for instance. If you look really closely at the
actual fuse element, you can usually get a good idea of the type. Some
antisurge fuses are very obvious, having a spring at one end, or a spiral
wound nature, which may be on a glass fibre string former. Some, however,
look little different from a 'straight' type, the only giveaway being a tiny
'blob' in the middle of the wire.

Arfa



Jim Land February 5th 07 06:44 AM

Fast blow vs. slow blow fuse
 
wrote in news:1170638081.632130.300050
@l53g2000cwa.googlegroups.com:

Looking at fuse how do you tell difference? Thanks.


Most reliable way is to read the part number on the side of the fuse and
look it up in the manufacturer's catalog.

For example, in the USA, MDL-7-1/2 is a 7.5 amp time-delay, AGC-7-1/2 is
fast-acting.

Eeyore February 5th 07 07:45 AM

Fast blow vs. slow blow fuse
 


Jim Land wrote:

wrote

Looking at fuse how do you tell difference? Thanks.


Most reliable way is to read the part number on the side of the fuse and
look it up in the manufacturer's catalog.

For example, in the USA, MDL-7-1/2 is a 7.5 amp time-delay, AGC-7-1/2 is
fast-acting.


It's worth pointing out that US fuses are different to the rest of the world.

You may also find international (IEC) fuses in US gear as described by Arfa.

Graham



[email protected] February 5th 07 05:35 PM

Fast blow vs. slow blow fuse
 
On Feb 5, 1:45 am, Eeyore
wrote:
Jim Land wrote:
wrote


Looking at fuse how do you tell difference? Thanks.


Most reliable way is to read the part number on the side of the fuse and
look it up in the manufacturer's catalog.


For example, in the USA, MDL-7-1/2 is a 7.5 amp time-delay, AGC-7-1/2 is
fast-acting.


It's worth pointing out that US fuses are different to the rest of the world.

You may also find international (IEC) fuses in US gear as described by Arfa.

Graham


Thanks all. My fuse is blown but element remaining does have a "blob"
in middle. Marks are on 1 end is current / voltage 4a/125 on other is
buss gmc ul csa and a "T in a rectangle." What's th "T"? Ideas on what
type fuse? Thanks. FYI for a TV.


[email protected] February 5th 07 06:04 PM

Fast blow vs. slow blow fuse
 
On Feb 5, 11:35 am, wrote:
On Feb 5, 1:45 am, Eeyore
wrote:





Jim Land wrote:
wrote


Looking at fuse how do you tell difference? Thanks.


Most reliable way is to read the part number on the side of the fuse and
look it up in the manufacturer's catalog.


For example, in the USA, MDL-7-1/2 is a 7.5 amp time-delay, AGC-7-1/2 is
fast-acting.


It's worth pointing out that US fuses are different to the rest of the world.


You may also find international (IEC) fuses in US gear as described by Arfa.


Graham


Thanks all. My fuse is blown but element remaining does have a "blob"
in middle. Marks are on 1 end is current / voltage 4a/125 on other is
buss gmc ul csa and a "T in a rectangle." What's th "T"? Ideas on what
type fuse? Thanks. FYI for a TV.- Hide quoted text -

- Show quoted text -


Looked on bussman site and found medium time delay. Tried a GMA fast
acting in set and blew. Think I should get GMC or you think there's a
ground condition. 1st fuse doesn't look bad...clear glass and alot of
element left intack.


Arfa Daily February 6th 07 01:47 AM

Fast blow vs. slow blow fuse
 

wrote in message
ups.com...
On Feb 5, 11:35 am, wrote:
On Feb 5, 1:45 am, Eeyore
wrote:





Jim Land wrote:
wrote


Looking at fuse how do you tell difference? Thanks.


Most reliable way is to read the part number on the side of the fuse
and
look it up in the manufacturer's catalog.


For example, in the USA, MDL-7-1/2 is a 7.5 amp time-delay, AGC-7-1/2
is
fast-acting.


It's worth pointing out that US fuses are different to the rest of the
world.


You may also find international (IEC) fuses in US gear as described by
Arfa.


Graham


Thanks all. My fuse is blown but element remaining does have a "blob"
in middle. Marks are on 1 end is current / voltage 4a/125 on other is
buss gmc ul csa and a "T in a rectangle." What's th "T"? Ideas on what
type fuse? Thanks. FYI for a TV.- Hide quoted text -

- Show quoted text -


Looked on bussman site and found medium time delay. Tried a GMA fast
acting in set and blew. Think I should get GMC or you think there's a
ground condition. 1st fuse doesn't look bad...clear glass and alot of
element left intack.


A time delay fuse is fitted so that it can withstand the inrush current at
power up. A 'fast' fuse is not a valid replacement, and will blow for no
other reason than that ... Fit a " T " rated type of the correct value ( 4
Amps ), and all should be well.

Arfa



Michael Kennedy February 6th 07 09:59 PM

Fast blow vs. slow blow fuse
 
Is this fuse in that Tv you were trying to fix?

If you're working on a TV I think you're in over your head if you don't know
the difference between fast and slow blow fuses. I'm not trying to insult
you, I'm just cautioning you that working on a TV is dangerous!

- Mike

"Arfa Daily" wrote in message
...

wrote in message
ups.com...
On Feb 5, 11:35 am, wrote:
On Feb 5, 1:45 am, Eeyore
wrote:





Jim Land wrote:
wrote

Looking at fuse how do you tell difference? Thanks.

Most reliable way is to read the part number on the side of the fuse
and
look it up in the manufacturer's catalog.

For example, in the USA, MDL-7-1/2 is a 7.5 amp time-delay,
AGC-7-1/2 is
fast-acting.

It's worth pointing out that US fuses are different to the rest of the
world.

You may also find international (IEC) fuses in US gear as described by
Arfa.

Graham

Thanks all. My fuse is blown but element remaining does have a "blob"
in middle. Marks are on 1 end is current / voltage 4a/125 on other is
buss gmc ul csa and a "T in a rectangle." What's th "T"? Ideas on what
type fuse? Thanks. FYI for a TV.- Hide quoted text -

- Show quoted text -


Looked on bussman site and found medium time delay. Tried a GMA fast
acting in set and blew. Think I should get GMC or you think there's a
ground condition. 1st fuse doesn't look bad...clear glass and alot of
element left intack.


A time delay fuse is fitted so that it can withstand the inrush current at
power up. A 'fast' fuse is not a valid replacement, and will blow for no
other reason than that ... Fit a " T " rated type of the correct value ( 4
Amps ), and all should be well.

Arfa





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